SKIP: FAILED

#include <metal_stdlib>
using namespace metal;
struct FragmentInputs {
  float4 position [[position]];
  bool front_facing [[front_facing]];
  uint sample_index [[sample_id]];
  uint sample_mask [[sample_mask]];
};

fragment void tint_symbol(FragmentInputs inputs) {
  if (inputs.front_facing) {
    float4 const foo = inputs.position;
    uint const bar = (inputs.sample_index + inputs.sample_mask);
  }
}
program_source:10:27: error: invalid type 'FragmentInputs' for input declaration in a fragment function
fragment void tint_symbol(FragmentInputs inputs) {
                          ^~~~~~~~~~~~~~~~~~~~~
program_source:4:3: note: type 'float4' (vector of 4 'float' values) cannot be used in struct of resources/colors
  float4 position [[position]];
  ^
program_source:5:3: note: type 'bool' cannot be used in struct of resources/colors
  bool front_facing [[front_facing]];
  ^
program_source:6:3: note: type 'uint' (aka 'unsigned int') cannot be used in struct of resources/colors
  uint sample_index [[sample_id]];
  ^
program_source:7:3: note: type 'uint' (aka 'unsigned int') cannot be used in struct of resources/colors
  uint sample_mask [[sample_mask]];
  ^
program_source:12:18: warning: unused variable 'foo' [-Wunused-variable]
    float4 const foo = inputs.position;
                 ^
program_source:13:16: warning: unused variable 'bar' [-Wunused-variable]
    uint const bar = (inputs.sample_index + inputs.sample_mask);
               ^